Windshield wipeb



Oct. 30, 1928.

J. BORNSTEIN WINDSHIELD WIPEH Filed Oct. 17, 1927 2 Sheets-'Sheet l J. BORNSTEIN WINDSHIELD WIPER Qct. 30, 1928.

Filed 0611. 17, 1927 2 Sheets-$heet Patented Uct. Lil), 1928.

UNITED STATES mean":

PATENT OFFlCE.

JOSEPH BORNSTEIN, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO SOMBO'O, INC, 01 BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

lVINDSI-IIELD WIPER.

Application filed October 17, 1927. Serial No. 226,?84.

This invention relates to wind shield wipers of the motor actuated type.

Briefly stated, an important object of the invention is to provide a wind shield wiper embodying a wiper arm feed screw mounted to partake of a limited longitudinal movement under the influence oi the thrust thereof when the wiper arm reaches the end of movement in one direction, the longittulinal movement of the feed screw being relied on to bring about the operation of a reversing switch by which the direction of rotation of the electric motor for the teed screw may be reversed.

A iurtherand equally important object is to provide a wind shield wiper having simple means by whichv a pair of wiper units may be mounted to operate in tandem acro a wind. shield to assure a wide range of vision.

Another aim is to provide a motor actuated windshield wiper in which the whipping so commonly found in the feed screws of other Wipers e'tlectively combated by employing a feed screw of a greatly reduced length and in connecting only one of a plurality of connected wipers to the feed screw and accomplishing the simultaneous travel of all the wipers through their connection with each other and the connection of one of the wipers with the teed screw.

Another and equally important object is to provide a wind shield wiper of the character specified which is of highly simplified construction, durable in use and cheap to manufacture,

Further, an aim of the invention is to provide a wind shield wiper which may be in stalled on a motor vehicle or the like during unrnutzuzture or at any time thereafter in a highly convenient and expeditious nmnner and which when applied will not mar the appearance of the vehicle.

Other objects and advantages will be ap' parent during the course ol the following description.

In the accompanying drawings forming a part of this application and in which like nuinerals are employed to designate like parts throughout the same,

Figure 1 is a perspective of the wiper applied,

Figure 2 is a group perspective,

Figure 3 is a detail view,

Figure l is a longitudinal sectional view through the wiper,

Figure 5 is a vertical transverse sectional view tali'en on line 5-5 oiii Figure l,

Figure 6 is a vertical transverse sectional view taken on line 66 of Figure 4-,

Figure 7 is a. vertical trauliverse sectional view taken on line l'-7 of Figure at.

In the drawings the numeral 5 designates a windshield across the front of which a tubular support (3 is secured by brackets 7 of any preferred type. One end of the tubular supportis shown to have connection with a casing 8 within which an electric motor shown in dotted lines is housed.

Figure clearly illustrates that the armature shaft 9 of the motor has connection with a driving means in the nature of a feed screw 10 l'hrough a tongue in groove connection which ]')Qll11it5$ of longitudinal movement of the fed screw within the limits thereof with out disturbing the driving connection between the motor and the screw. More specilically, one end of the armature shaft is provided with intersecting grooves slidably receiving intersecting tongues 11 on the feed screw 10. This connection, as previously suggested, permits the feed screw to move 1011, 3- tudinally under the influence of the thriist thereon to bring about the operation of a reversing switch.

The end oi the feet screw 10 remote from the motor is rotatably and slidably mounted within a biaring 12 secured to the intermediate portion of the tubular support (5 by screws or similar fastening devices as suggested inl' igure 6. in carrying out the iiivention a "teed not or :ilttaching member Ll threaded on the feed. screw 10 between the hearing 12 and motion transn'iittiiru collar or actuating element 16 and is adapted to move longitudinally of the tubular support in response to the turning of the feed screw.

lfhe nut 14; functions as an attaching member for a wiper 20 of? conventional or other design, the wiper being rigidly secured to the nut l lthat the squeegee thereof caused to move in a straight path across a portion ot the wind shield.

A second wiper 21 is provided with an attaching member 22 slidably mounted within the tubular member 6 between the bearing 12 and. the closed end 24 of the tubular member.

One or more tie rods 26 connect the members 14: and 22 for operation in tandem. Referring now to Figure 6 it will be seen that the bearing member 12 has the upper and lower sides thereof spaced from the upper and lower sides ot the tubular iember (5 to per mil" of the :tree longitudinal movement of the tie rods.

Figures 5 and 7 illustrate that the rear side of the tubular support 6 is formed with a lon gitudinal slot 25 slidably receiving radial projections ot the members 14; and. 22 to hold the members 14L and 22 against turning.

it is believed to be apparent from the fore going that the illustrated arrangement oi? the wiping elements 20 and 21 provides for the simultaneous operation of the wipers and a substantial reduction in the length of the feed screw so that whipping oi? the feed screw is avoided. However, the teed screw may he continued beyond the nut 12 with a plain or threaded portion.

Particular attention is now directed to the "fact that the members 12 and 16 function as bumpers against which the feed nut 1st. engages to bring about the longitudinal movement of the feed screw under the influence of the thrust thereon. In explaining this it is pointed out that when the nut 14 reaches the limit of movement in the direction of the motor the same will be engaged with the collar 16 and continued turning of the feed screw will result in the limited longitudii'nil movement of the same within the bearings 12 and 28 so that the operating arm 30, of a switch is moved from one extreme position to the other. Figure 4 clearly illustrates that the switch operating'arm 30 is extended into a circumferential groove in the collar 16.

ld hen the switch operating arm 30 is thus moved. from one extreme position to the other the motor is reversed to change the direction of rotation of the teed screw whereupon the direction of travel of the wipers 20 and 21 is reversed. The rotation of the teed screw creates an end thrust which positively holds the collar 16 and the arm connected thereto in an extreme position until the nut 14 reachesthe limit of movement in one direction.

It here pointed out that the reversing mechanism may consist of separate longitudinally spaced contacts over which a movz ble contact is adapted to slide when the member 14 reaches the limit of movement in one direction. However, the reversing switch may be of any construction and may be placed ei her interiorly or exteriorly ot the motor casing.

Of course, the electric switch is connected in the usual and well known manner with the electric motor and a suitable source of supply, such as a storage battery, may be relied on to supply current to the motor through a cable 36 and the switch.

A wind shield wiper constructed in accordance with this invention requires little ma chine worlc and consequently the cost ot the same is greatly reduced as compared to other wind shield wipers in which the wiping clcment or elements move straight across the wind shield.

Die castings may be relied on largely in the manufacture or the wiper and the assembly of the various parts into the completed art icl will be found to be very much simplilicd.

As suggested in the objects a wind shield constructed in accordance with this invcntion may be installed on a motor vehicle or the like during manufacture or at any linulhcrca'l'ter withoutthe exercise of unusual skill and without marring the appearance ot the vehicle.

The electrical connection may be made by those 0t lin'iitcd knowledge oi electrical mat tors so that the wiper may be expeditiously and cconomicall applied by the users oi the same.

Having thus described the invent ion. what is claimed is:

1. In a structure of the cl'iaracler spccilicd. the con'ihinatimi oil a support. a motor carried by said support and having a shall. a ford screw carried by said support and brine novable endwise with respect to the motor. there being a loose driving connection bctween said teed screw and said sha'lt. a hear ing enclosing the connection between said :teed screw and said shalt. and a motor rcversing mechanism having connection wilh said longitudinally movable i'ced screw.

2. In a wind shield wiper. the comb nation of a tubular support, a feed member with n the tubular support. a wiper unit ha ring cow nection with the feed mcn'iber. a second wiping member having connection with the lirsi named wiping member exclusive oi said teed member, said second-nmned wiping-g unit hav ing an attaching portion within said tubular support.

3. In a wind shield wiper, the combination of a tubular member. a feed scrc w within the tubular membe' and having an active por tion terminating adjacent the intermediate portion ot' the tubular member. a wiper having a nut on the feed screw. :1 second wiper having an attaching meml r mounted within the tubular men'iber, a tie rod connecting the attaching member to said not tor movement of the two wipers in unison. and a bcarinn for said teed screw posioned between said nut and said attaching member.

4. In a structure ot' the character spw-ilicd. the combination ot a reversible motor. a tuhular member. a feed screw within the tubnlar member and n'iovable endwise therein. there being a tongue and groove slidable driving connection between said reversible motor and said feed screw, a collar rigidly secured to said teed screw, and a reversing switch for said motor provided with a movable arm actuated by said collar.

5. In a windshield wiper, a tubular member, squeegee supports mounted in spaced relation in tandem for longitudinal travel. within said tubular member, and a iced screw of less length than that of said tubular ntiember operatively connected to one of said squeegee supports.

6. In a windshield wiper, a tubular member, squeegee supports mounted in spaced relation in tandenji for longitudinal travel within said tubular member, a fixed hearing be tween id squeegee siuiports, and a feed screw or less length than that oil said tubular member o;'aeratively coni'iected to one olf said squeegee supports and journalled in said bearing.

7. In a windshield wiper, a tubular u1ember, squeegee supports mounted in spaced relation in tandem for longitudinal travel within said tubular Incn'iber, a listed bearing be tween said squeegee supports, a feed screw of less length than that of said tubular member operatively connected to one oi said squeegee supports and journalled in said l caring, an end bearing tor said ttccd screw, and a driving shalt having an unintm'rupted slidable driving connection with said tlced screw with in said last mentioned bearing.

8. In a windshield wiper, a main siqiport, squeegee supports movable along the main support in. spaced relation, driving, means of less length than the main support and operatively connected with one of the squeegee sup ports only, a motor ltiavin r connection with said driving means and having a control mechanism provided. with an ai'ttuating elcmeut rigi lly mounted on. and movable with said driving means, and means connecting the squeegee supports exclusive of the driving; means whereby the movement of one squeegee support by the driving means will etl'ect a sii'nultancous movement of the other squeesupport through said connecting means.

9. In a windshield wiper, a main support, squeegee supports movable along; the main support in spaced. relation, a bearing; carried by the main support between the squeegee supports, driving means of less length than that of the main support and operatively connected to one of said squeegee supports only and supported by said hearin si', and a motor having connection with said driving means and having a control mechanism provided with an actuating element rigidly mounted. on and movable with said driving); means.

10. In a windshield wiper, a main support,

a pair oil. wiper units carried by the main support in spaced relation along the length oi the same, driving means associated with the main support and operatively connected with one of said units for actuating the same, a motor having connection with said driving means and having a control mechanism provided with an actuating elementrigidly mounted on and movable with said driving means, and means exclusive of the driving means connecting the units in tandem tor oporation through the drive on one of them only.

11. In a windshield wiper, a tubular housing, a screw mounted for rotation in the housing; and extending); lougitiulinally to r a portion oil the length of the smile, a motor havin-ei connection with said screw and provided with a control mechanism having; an actuating element rigidly mounted on and momble with said screw, two wiper carriers slidably mount ed in the housing in spaced relation, one on the screw and the other in the remaining portion of the housing not occupied by the screw, and means connecting the carriers ex elusive ot the screw whereby the movement of one carrier by the screw will etlect the simultaneous movement of the other carrier through said. connecting means.

12. In a windshield wiper, a main support, scpleegee supports movable along the main support in spaced relation, driving means of less length than the main support and operatively connected with one of the squeegee supports only, and means connecting the squeegee supports exclusive of the driving" means whereby the movement of one squeegee support by the driving means will etiect a simultaneous movement of the other squeegee support through said connecting means,

In a windshield wiper, a main suppor squeegee supports movable along the main support in spaced relation, a bearing" carried by the main support between the squeegee supports and driving; means journaled in said bearing and having operative connection with one only of said squeegee supports and bell? substantially equal in length to the travel of the squeegee support connected thereto,

Ll. In a windshield wiper, a tubular member, squeegee supports mounted i n spaced re-- lation in tandem for longitudinal travel with in said tubular men'iber, and a feed screw of approximately half the length of said tubular member operatively connected to one of said squcegee'supports.

In testimony whereot l allix my signature.

JGSEPH BORNS'lElN. 

